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author Olivier Galibert <galibert@pobox.com>2020-05-25 16:42:42 +0200
committer Olivier Galibert <galibert@pobox.com>2020-05-25 16:42:57 +0200
commit22513fb6fe281f5ccb75aaddb6417a12a66c313d (patch)
tree3cf84032cc6482d685a8dbb57e015bd17c7f7fdc /src/emu/emumem_hem.h
parente42c2d2874cf9c1092c01ab5ce9ef997d465ce25 (diff)
emumem: A little more speedup. cache and specific change syntax, and are not pointers anymore [O. Galibert]
The last(?) two changes are: - Add a template parameter to everything (theoretically the address space width, in practice a level derived from it to keep as much compatibility between widths as possible) so that the shift size becomes a constant. - Change the syntax of declaring and initializing the caches and specifics so that they're embedded in the owner device. Solves lifetime issues and also removes one indirection (looking up the base dispatch pointer through the cache/specific pointer).
Diffstat (limited to 'src/emu/emumem_hem.h')
-rw-r--r--src/emu/emumem_hem.h16
1 files changed, 8 insertions, 8 deletions
diff --git a/src/emu/emumem_hem.h b/src/emu/emumem_hem.h
index 184c752625c..1d076ebc51b 100644
--- a/src/emu/emumem_hem.h
+++ b/src/emu/emumem_hem.h
@@ -5,7 +5,7 @@
// Accesses fixed memory (non-banked rom or ram)
-template<int Width, int AddrShift, int Endian> class handler_entry_read_memory : public handler_entry_read_address<Width, AddrShift, Endian>
+template<int Width, int AddrShift, endianness_t Endian> class handler_entry_read_memory : public handler_entry_read_address<Width, AddrShift, Endian>
{
public:
using uX = typename emu::detail::handler_entry_size<Width>::uX;
@@ -14,7 +14,7 @@ public:
handler_entry_read_memory(address_space *space) : handler_entry_read_address<Width, AddrShift, Endian>(space, 0) {}
~handler_entry_read_memory() = default;
- uX read(offs_t offset, uX mem_mask) override;
+ uX read(offs_t offset, uX mem_mask) const override;
void *get_ptr(offs_t offset) const override;
inline void set_base(uX *base) { m_base = base; }
@@ -25,7 +25,7 @@ private:
uX *m_base;
};
-template<int Width, int AddrShift, int Endian> class handler_entry_write_memory : public handler_entry_write_address<Width, AddrShift, Endian>
+template<int Width, int AddrShift, endianness_t Endian> class handler_entry_write_memory : public handler_entry_write_address<Width, AddrShift, Endian>
{
public:
using uX = typename emu::detail::handler_entry_size<Width>::uX;
@@ -34,7 +34,7 @@ public:
handler_entry_write_memory(address_space *space) : handler_entry_write_address<Width, AddrShift, Endian>(space, 0) {}
~handler_entry_write_memory() = default;
- void write(offs_t offset, uX data, uX mem_mask) override;
+ void write(offs_t offset, uX data, uX mem_mask) const override;
void *get_ptr(offs_t offset) const override;
inline void set_base(uX *base) { m_base = base; }
@@ -50,7 +50,7 @@ private:
// Accesses banked memory, associated to a memory_bank
-template<int Width, int AddrShift, int Endian> class handler_entry_read_memory_bank : public handler_entry_read_address<Width, AddrShift, Endian>
+template<int Width, int AddrShift, endianness_t Endian> class handler_entry_read_memory_bank : public handler_entry_read_address<Width, AddrShift, Endian>
{
public:
using uX = typename emu::detail::handler_entry_size<Width>::uX;
@@ -59,7 +59,7 @@ public:
handler_entry_read_memory_bank(address_space *space, memory_bank &bank) : handler_entry_read_address<Width, AddrShift, Endian>(space, 0), m_bank(bank) {}
~handler_entry_read_memory_bank() = default;
- uX read(offs_t offset, uX mem_mask) override;
+ uX read(offs_t offset, uX mem_mask) const override;
void *get_ptr(offs_t offset) const override;
std::string name() const override;
@@ -68,7 +68,7 @@ private:
memory_bank &m_bank;
};
-template<int Width, int AddrShift, int Endian> class handler_entry_write_memory_bank : public handler_entry_write_address<Width, AddrShift, Endian>
+template<int Width, int AddrShift, endianness_t Endian> class handler_entry_write_memory_bank : public handler_entry_write_address<Width, AddrShift, Endian>
{
public:
using uX = typename emu::detail::handler_entry_size<Width>::uX;
@@ -77,7 +77,7 @@ public:
handler_entry_write_memory_bank(address_space *space, memory_bank &bank) : handler_entry_write_address<Width, AddrShift, Endian>(space, 0), m_bank(bank) {}
~handler_entry_write_memory_bank() = default;
- void write(offs_t offset, uX data, uX mem_mask) override;
+ void write(offs_t offset, uX data, uX mem_mask) const override;
void *get_ptr(offs_t offset) const override;
std::string name() const override;